Buffing-machine attachment.



M. HORAN..

BUFFING MACHINE ATTACHMENT.

APPLICATION FILED AUGJI I918.

Patented Feb. 18, 1919.

2 SH EETS-SHEET I.

. A I I I I A I M. HORAN.

BUFFING MACHINE ATTACHMENT.

APPLICATION FILED AUGJ. 191a.

Patented Feb. 18, 1919.

2 SHEETS-SHEET 2.

L Aw Q MAURICE HORAN, 0F WATERBURY, CONNECTICUT, .ASSIGNOR T0 WATERBURY MFG. CO., 01? WATERBURY, CONNECTICUT, A CORPORATION.

BUFFING-IVLACHINE ATTACHMENT.

Specification of Letterslatent.

Patented Feb. 18, 1919.

Application filed August 7, 1918. Serial No. 248,663.

To all whom it may concern:

Be it known that I, MAURICE Honniv, a citizen of the United States, residing at Waterbury, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Bufling-Machine Attachments; and I do hereby declare the following, when taken in connection with the accompanying drawings and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this application, and represent, in-

Figure 1 a broken view in side elevation of my improved attachment applied to a butting machine of ordinary type.

Fig. 2 a view in longitudinal section on the line 2-2 of Fig. 1.

Fig. 3 a detached sectional view on the line 3-3 of Fig. 1.

Fig. 4 a detached end view of the double chuck-carrier, shown as disassembled.

Fig. 5 a similar view showing the same part, assembled.

My invention relates to an improved buffing machine attachment, the object being to permit the simultaneous bufling of two pieces of work at one and the same time from one main bufiing-spindle.

lVith these ends in view, my invention consists in a bufling machine attachment having certain details of construction as will be hereinafter described and pointed out in the claims.

In carrying out my invention as herein shown, I employ a double, chuck-carrier having two bearing-sleeves 4 and, 5 and a split clamping-sleeve 6, these three sleeves being cast in one piece and united by webs 7, 8 and 9, and the hearing or chuck-sleeves be ing sufliciently separated from each other to permit the bufling-wheel (not shown) to enter part way between them. The offsetting lugs 10 and 11 of the split-sleeve 6 are provided with clamping bolts 12 furnished with nuts 13. The said double chuck is also formed with a socket 14 receiving a crank pin 16 secured in place by a set-screw 16 and carrying a washer 17 and a nut 18, which latter is screwed upon the. threaded end 19 of the pin 15. The said carrier is by its split-sleeve 6 clamped upon the forward end of a reciprocating sleeve 20 (Fig. 2) which is mounted for reciprocation, within narrow limits, upon the main bufiing-spindle 21 saldarm by means of a key 25 which does not prevent the sleeve from reciprocating Wlth respect to the arm. The driving gear 22 aforesald, meshes into and simultaneously the projecting ends of flanged rotary bushings 27 (Fig. 3) located. within the bearingsleeves 4 and 5, by means of keys 2S and nuts 29. These bushings receive threaded a key 23. The reciprocatingdrives chuck-gears 25 respectively secured to l chuck-spindles 30, the projecting inner ends 1 of which are provided with hand-wheels 31 secured in place by set screws 32, while their unthreaded forward ends project beyond the gears 25 and are provided with tapering chuck-spreaders or heads 33 of any approved construction, it being understood that the "projecting forward ends of the spindles 30 receive and support the chucks whatever their character, in which the Work is mounted. The spreaders 33 will be moved in one direction or the other as required for opening and closing the chucks, by means of the hand-wheels 31.

Under the construction described, the two chucks are simultaneously rotated at the same speed by means of the spindle 21, whereas in the bufiing attachments of the prior art, only one chuck has been operated. It will also be understood that the rotation of the gears 25 rotates not only the spindles 30, but also the bushings 27 and the handwheels 31. For imparting a transverse movement to the work with respect to the bufling-wheel, I may employ any of the well known mechanisms for that purpose. As herein shown, the carrier is connected by a rod 34 attached to the crank-pin 15 anda spring 35, to a connecting-rod 36 the outer end of which is connected to a cam-disk 37 having a radial slot 38 which provides for varying the throw of the main s indle and the carrier, and hence of the chuc s and the work carried thereby. The said disk 37 is connected by suitable gearing to the driving shaft 30 which is also connected by gearing with the main spindle 21 which is thus simultaneously rotated and reciprocated.

In using my improved buifing attach- 7 and also revolved. Under this construction,

1nent,' two articles to be buffed are mounted in the chucks respectively applied to the chuck-spindles 30. Then when the machine is started, the articles carried by the respective chucks are simultaneously moved lengthwise with respect to the buffing wheel p as herein shown and described, but hold myself at liberty to use-my attachment with any machine to which it may be attached.

I claim 1. A buffing machine attachment comprising'a doubleone-piece chuck-carrier having twochuck-bearing sleeves separated as requiredto permit the partial entrance of a bufiing-wheel between them and each mounting an adjustable chuck-spindle provided atitsrear end with a gear-wheel andat its'forward end with a chuck-spreader, and

the-said carrier also having a clampingsleeve by which the carrier ismounted upon the main buffing spindle 0f the machine a gear connecting the main spindle with the respectlve gears of the chuck-spindles, and means for rotating the ma1n-sp1ndle and for reciprocating it.

2. In a buffing machine, the combination with the main buffing-spindle thereof, of a non-rotatable sleeve mounted for reciprocainto the said gears on the chuck-spindles for simultaneously rotating the same, and means connected with the double chuck-earrier for reciprocating the same simultaneously with the rotation of the chuck-spindles.

In testimony whereof, I have signed this specification in the presence of two subscribing witnesses.

MAURICE HORAN. Witnesses:

JOHN S. NnAeLn, A. C. BECKER.

Oopies of this patent 'may be obtained for five cents each, by addressing the Commissioner of Patents,

1 Washington, D. C. 

